BPG致力于知识的发现和传播
Total Visits of This Article
2018 | 总访问次数
排名 国家/地区 数量 占比
1 United States 12 33.3%
2 Germany 7 19.4%
3 United Kingdom 5 13.9%
4 China 4 11.1%
5 Iran, Islamic Republic of 3 8.3%
6 Netherlands 2 5.6%
7 Romania 2 5.6%
8 Thailand 1 2.8%